During the last week the observing schedule was interrupted due to
high radiation associated with solar activity. The loads were halted
at 11:52pm EST on Dec 21 through a ground command to execute the SI
Safing SCS 107. This ensured that the accumulated radiation dose for
ACIS remained below the allowed threshold. All spacecraft actions
were nominal. A real-time procedure was executed on Dec 22 to disable
SCS-29, which was enabled during the safing sequence. A replanned
schedule for resuming science observations was uplinked on Dec 22 with
65.1ks of science loss.

The observing schedule was interrupted again due to high radiation
associated with solar activity on Dec 23. The loads were halted at
6:33am EST through a ground command to execute the SI Safing SCS
107. This ensured that the accumulated radiation dose for ACIS
remained below the allowed threshold. All spacecraft actions were
nominal. Real-time procedures were executed on Dec 23 to disable
SCS-29, which was enabled during the safing sequence, and to update
the observation identifier number, to aid CXCDS processing of the
interrupted observation. A replanned schedule for resuming science
observations was uplinked on Dec 24 with 61.6ks of science loss.